Metolius Ultralight Power Cam Set Size Small covers sizes 1 through 4 - Range 0.49-1.32" (12.5-33.5mm) Size Large covers sizes 5 through 8 - Range 1.11-2.80" (28.1-71.1mm) Direct axle technology saves weight and allows for more placement options in shallow, narrow, or bottoming placements. Direct Axle Technology makes tricky placements easier due to better cam lobe visibility - especially in the smaller sizes Color Coded 13mm monster sling webbing and tubing